Coupling for toner cartridge



FIG. 1 is a front, top and right side perspective view of a coupling fortoner cartridge, showing my new design;

FIG. 2 is a rear, top and left side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof.

FIG. 6 is a bottom view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view thereof.

The ornamental design for a coupling for toner cartridge, as shown anddescribed.